LTC2433-1

The LTC2433-1 is a differential input micropower 16-bit No Latency ∆Σ^TM analog-to-digital converter with an integrated oscillator. It provides 0.12LSB INL and 1.45µV RMS noise independent of V_REF. It uses delta-sigma technology and provides single conversion settling of the digital filter. Through a single pin, the LTC2433-1 can be configured for better than 87dB input differential mode rejection at 50Hz and 60Hz ±2%, or it can be driven by an external oscillator for a user defined rejection frequency. The internal oscillator requires no external frequency setting components.

The converter accepts any external differential reference voltage from 0.1V to V_CC for flexible ratiometric and remote sensing measurement configurations. The fullscale differential input range is from – 0.5 • V_REF to 0.5 • V_REF. The reference common mode voltage, V_REFCM, and the input common mode voltage, V_INCM, may be independently set anywhere between GND and V_CC. The DC common mode input rejection is better than 140dB.

The LTC2433-1 communicates through a flexible 3-wire digital interface which is compatible with SPI and MICROWIRE protocols.

Applications

• Direct Sensor Digitizer
• Weight Scales
• Direct Temperature Measurement
• Gas Analyzers
• Strain-Gage Transducers
• Instrumentation
• Data Acquisition
• Industrial Process Control